Insulator construction



Patented Mar. 4, 1930 UNITED STATES PATENT OFFICE ARNOLD HALLER, OF BADEN, SWITZERLAND, ASSIGNOR TO AKTIENGESELLSCHAFT BROWN BOVERI 8: CIE, OF LEADER, SVTITZER-LAND, A JOENTSTOCK COMPANY OF SWITZERLAND CGLTSTRUCTION Application filed February 18, 1326, Sierial No. 89,179 and in Germany February 26, 1925.

This invention relates to the construction of electric insulators, particularly those of the line-supporting type. It has to do primarily with the connection of the insulator body to the element whereby it is connected to the supporting socket or bracket.

One of the objects of the invention is the provision of a construction which facilitates the adjustment of the insulator body to the connecting means, and permits of its disconnection therefrom.

Another object is the provision of a construction which will obtain a secure connection between the insulator body and the supporting socket in spite of irregular dimensional variations in the former.

A further object is the provision of a construction which is very simple and which can be manufactured and assembled very economically.

Other and further objects of the invention will be pointed out or indicated hereinafter, or will be obvious to one skilled in the art upon an understanding of the present disclosure.

In the drawing forming a part of this specification is illustrated one embodiment of the invention, but it is intended that the invention may take other and divers forms without departing from the scope of the appended claims.

In the drawing,

Fig. 1 is a part sectional elevation of an illustrative structure on a diameter of tl e insulator, and

Fig. 2 is a cross section taken on substantially line 2-2 of Fig. 1.

Referring immediately to the illustrative form for an understanding of the invention, let it be understood that the reference character 10 designates the insulator, the same being formed with the internal cavity and an annular groove 1O adjacent the bottom of the skirt. Above said groove are inwardly projecting lugs 1O affording intervening notches. The mounting device comprises a. bushing or socket member 11 which is tapped so as to be screwed on to the supporting post and screw-threaded externally for engagement with the clamping nut 12. The

latter, as seen in Fig. 2, is of proper dimensions to enter the lower portion of the in ternal cavity of the insulator, and is provided at intervals with peripheral notches 12 A clamping plate 14 is provided with an axial aperture freely accommodating the bushing 11, said plate being dished in form and of proper diameter to overlap the margin of the insulator skirt. At intervals corresponding to the spacing of the notches 12, tongues 14 are struck up out of the body of the plate 14, said tongues being of suliicient height to engage between the appropriately located lugs 10. A number of stiff washers 15 are provided corresponding to the number of tongues 14, said washers being of sufficient diameter to project into the groove 10 when retained on the tongues 14 as illustrated.

In assembling the structure, the insulator is inverted, and the clamping nut 12 inserted into its cavity, so as to rest on the lugs 10, with the notches 12 in register with the spaces between said lugs. The washers 15 are now placed in the groove 10 over the slots 12 and the clamping plate 14 inserted so that the tongues pass through the holes in the washers and slots 12 and project in between the lugs 10. Then the clamp screw or bushing 11 is inserted through the clamping plate 14 and threaded into the clamping nut 12, and. set up tightly, thereby clamping washers 15 between the nut 12 and the plate 14 and at the same time gripping the insulator between the latter and the washers. In this operation the nut 12 and clamping plate 14 are held against rotation by the engagement of the tongues 14 between the lugs 10.

It will be observed that the invention provides a very secure and easily assembled construction in which the security of the connection is not affected by contemplated variations in the roundness or dimensions of the insulator.

What I claim is 1. Insulator construction comprising the combination with an insulator having an inwardly extending flange, of a clamping memher, a clamping nut, radially adjustable members between the clamping member and nut,

and a bushing operable in the clamping member and nut to secure the radially adjustable members and clamping member in clamping engagement with said flange.

2. Insulator construction comprising the combination with an insulator having an internal flange, of a clamping member, a clamping nut, radially adjustable members operable by the clamping member and nut for en agement with said flange, a bushing operab e in the clamping member and nut to adjust the radially adjustable members. and means for maintaining the clamping member and nut against rotation.

3. Insulator construction comprising the combination with an insulator having an internal flange, of a clamping member, radially adjustable members for engaging opposite sides of the flange, and a bushing and nut for drawing up the clamping member and radially adjustable members.

4. In insulator construction, an insulating body member having a notched internal flange, a nut having notches registering with the notches in said flange, a clamping plate having portions extending laterally therefrom and disposed in the notches in said flange and said nut to prevent rotation thereof, and means cooperating with said nut to clamp said plate against said body member.

5. In insulator construction, an insulating body member having a notched internal flange, a nut having notches registering with the notches in said flange, a clamping plate having portions extending laterally therefrom and disposed in the notches in said flange and said nut to prevent rotation thereof, means disposed on said laterally-extending plate portions for tilting movement into engagement With said body member, and means for claming said plate against said body member and for effecting tilting movement of said. last-named means against said body member.

In testimony whereof I have hereunto subscribed my name at Zurich, Switzerland, on the 3rd day of February A. D. 1926.

ARNOLD HALLER. 

